/* ============================================================================
   RunTheSim — site stylesheet
   Implements brand-guidelines.html (Quantum Plasma) on the live website.
   Version 1.0 · 2026-04-19

   Class naming follows existing JS contracts (hub.js, ant-colony.js,
   forest-fire.js). Do not rename classes without updating those scripts —
   see CASCADE.md entry 08.
   ============================================================================ */

:root {
  --bg: #0C0A14;
  --surface: #161428;
  --surface-2: #1E1A33;
  --cyan: #30E8FF;
  --magenta: #FF3D9B;
  --text: #F0EDF7;
  --text-soft: #B5AEC8;
  --muted: #554D6B;
  --muted-text: #8A82A3;
  --line: rgba(139, 128, 180, 0.22);
  --line-strong: rgba(139, 128, 180, 0.45);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;

  --radius-sm: 2px;
  --radius-pill: 999px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: 'Hanken Grotesk', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}

img, svg, canvas { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* ============================================================================
   SHELL
   ============================================================================ */

.site-shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-12);
}

/* ============================================================================
   TOPBAR / NAV
   ============================================================================ */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(12, 10, 20, 0.82);
  backdrop-filter: blur(14px) saturate(1.3);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  border-bottom: 1px solid var(--line);
  padding: 14px var(--space-12);
  margin: 0 calc(-1 * var(--space-12));
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.38em;
  font-family: 'Orbitron', sans-serif;
  font-weight: 500;
  font-size: 24px;
  letter-spacing: -0.005em;
  color: var(--text);
  line-height: 1;
  transition: opacity 0.2s ease;
  text-transform: none;
}
.brand:hover { opacity: 0.85; }
.brand-mark {
  width: 1.4em;
  height: 1.4em;
  display: block;
  flex-shrink: 0;
}
.brand-kicker {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--magenta);
}

.topnav {
  display: flex;
  gap: 4px;
  margin-left: auto;
  align-items: center;
  flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.topnav a {
  color: var(--text-soft);
  padding: 6px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.topnav a:hover { color: var(--magenta); border-color: var(--magenta); }

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.status-pill.live {
  background: rgba(48, 232, 255, 0.1);
  color: var(--cyan);
  border: 1px solid rgba(48, 232, 255, 0.35);
}
.status-pill.live::before { content: "●"; color: var(--cyan); font-size: 0.9em; }
.status-pill.soon {
  background: rgba(255, 61, 155, 0.08);
  color: var(--magenta);
  border: 1px solid rgba(255, 61, 155, 0.35);
}
.status-pill.soon::before { content: "○"; color: var(--magenta); font-size: 0.9em; }

.domain-pill {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted-text);
  border: 1px solid var(--line);
}

/* ============================================================================
   TYPOGRAPHY
   ============================================================================ */

.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--magenta);
  margin: 0;
}
.eyebrow::before { content: "[ "; }
.eyebrow::after { content: " ]"; }

h1 {
  font-family: 'Orbitron', sans-serif;
  font-weight: 500;
  font-size: clamp(38px, 5vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.005em;
  text-transform: uppercase;
  color: var(--text);
}
h1 em { font-style: normal; color: var(--cyan); }
h1 em .emerge { color: var(--magenta); }

h2 {
  font-family: 'Orbitron', sans-serif;
  font-weight: 500;
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.1;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--text);
}

h3 {
  font-family: 'Hanken Grotesk', sans-serif;
  font-weight: 500;
  font-size: 18px;
  line-height: 1.25;
  letter-spacing: -0.005em;
  color: var(--text);
}

p { color: var(--text-soft); }
.hero-text { font-size: 16px; color: var(--text-soft); max-width: 60ch; }

code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.92em;
  color: var(--cyan);
  background: var(--surface);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

/* ============================================================================
   BUTTONS
   ============================================================================ */

.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: 'Hanken Grotesk', sans-serif;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-decoration: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: transform 0.25s ease, box-shadow 0.35s ease, color 0.3s ease;
  position: relative;
}

.button-primary {
  background: var(--cyan);
  color: var(--bg);
  padding: 14px 26px;
}
.button-primary::before {
  content: "→";
  font-family: 'JetBrains Mono', monospace;
  display: inline-block;
  transition: transform 0.3s ease;
}
.button-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -8px rgba(48, 232, 255, 0.55), 0 0 0 1px rgba(48, 232, 255, 0.3);
}
.button-primary:hover::before { transform: translateX(4px); }

.button-primary-hero {
  background: var(--cyan);
  color: var(--bg);
  padding: 20px 36px;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.button-primary-hero::before {
  content: "→";
  font-family: 'JetBrains Mono', monospace;
  display: inline-block;
  transition: transform 0.3s ease;
}
.button-primary-hero:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px -10px rgba(48, 232, 255, 0.6), 0 0 0 1px rgba(48, 232, 255, 0.35);
}
.button-primary-hero:hover::before { transform: translateX(6px); }

.button-secondary {
  background: transparent;
  color: var(--magenta);
  border: 1px solid var(--magenta);
  padding: 13px 25px;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.button-secondary::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--magenta);
  transform: translateX(-101%);
  transition: transform 0.35s cubic-bezier(0.5, 0, 0.2, 1);
}
.button-secondary:hover { color: var(--bg); }
.button-secondary:hover::before { transform: translateX(0); }

.button-secondary-hero {
  background: transparent;
  color: var(--magenta);
  border: 1px solid var(--magenta);
  padding: 19px 35px;
  font-size: 15px;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.button-secondary-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--magenta);
  transform: translateX(-101%);
  transition: transform 0.35s cubic-bezier(0.5, 0, 0.2, 1);
}
.button-secondary-hero:hover { color: var(--bg); }
.button-secondary-hero:hover::before { transform: translateX(0); }

.button-ghost {
  color: var(--magenta);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.1em;
  padding: 4px 0;
  border-bottom: 1px dashed var(--magenta);
  gap: 0;
  position: relative;
  text-transform: uppercase;
}
.button-ghost::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 0;
  height: 1px;
  background: var(--cyan);
  transition: width 0.35s ease;
}
.button-ghost:hover { color: var(--cyan); border-bottom-color: transparent; }
.button-ghost:hover::after { width: 100%; }

.button.is-disabled {
  opacity: 0.4;
  pointer-events: none;
  cursor: not-allowed;
}

/* ============================================================================
   MAIN LAYOUT
   ============================================================================ */

main { padding: 48px 0 80px; }

.section-block {
  margin-top: var(--space-24);
  padding-top: var(--space-12);
  border-top: 1px solid var(--line);
}

.section-head {
  display: grid;
  gap: 14px;
  margin-bottom: var(--space-12);
  max-width: 64ch;
}
.section-head h2 { margin: 0; }
.section-head p { font-size: 15.5px; color: var(--text-soft); }

.section-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

/* ============================================================================
   HERO (hub)
   ============================================================================ */

.hero-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: var(--space-16) var(--space-12) var(--space-12);
  margin-top: var(--space-8);
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: var(--space-12);
  align-items: center;
  position: relative;
  overflow: hidden;
}
.hero-copy { display: grid; gap: 24px; }
.hero-copy .eyebrow { margin-bottom: 4px; }
.hero-copy h1 { max-width: 16ch; }
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-soft);
}
.trust-row span::before {
  content: "· ";
  color: var(--cyan);
  font-weight: 700;
  margin-right: 2px;
}

.trust-row strong {
  font-family: 'Orbitron', sans-serif;
  font-weight: 500;
  color: var(--cyan);
  padding: 0 2px;
}

.hero-sim {
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
  align-self: stretch;
}
.hero-sim-frame {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #0c0805;
  aspect-ratio: 520 / 360;
  box-shadow: 0 0 60px rgba(232, 163, 68, 0.08), inset 0 0 40px rgba(0, 0, 0, 0.4);
}
.hero-sim-frame canvas {
  width: 100%;
  height: 100%;
  display: block;
}
.hero-sim-caption {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--muted-text);
  letter-spacing: 0.08em;
  text-transform: lowercase;
  margin: 0;
}
.hero-sim-cta {
  align-self: flex-start;
  margin-top: 4px;
}

/* ============================================================================
   LIBRARY / SOCIAL GRIDS (rendered by hub.js)
   ============================================================================ */

.library-grid,
.social-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 18px;
}

.sim-card,
.social-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 24px 26px 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  animation: fadeUp 0.5s ease both;
  transition: transform 0.25s ease, border-color 0.25s ease;
  min-height: 260px;
}
.sim-card:hover,
.social-card:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
}
.sim-card-live,
.social-card-live {
  border-color: rgba(48, 232, 255, 0.3);
}

.card-topline {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.sim-card h3,
.social-card h3 {
  font-family: 'Orbitron', sans-serif;
  font-weight: 500;
  font-size: 19px;
  letter-spacing: -0.005em;
  color: var(--text);
  line-height: 1.1;
  text-transform: none;
}
.sim-card p,
.social-card p,
.social-note {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.5;
}

.feature-list {
  display: grid;
  gap: 6px;
  margin-top: 4px;
}
.feature-list li {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted-text);
  padding-left: 18px;
  position: relative;
}
.feature-list li::before {
  content: "·";
  position: absolute;
  left: 6px;
  color: var(--cyan);
  font-weight: 700;
}

.card-actions,
.social-actions {
  margin-top: auto;
  padding-top: 12px;
}

.hub-grid-empty {
  min-height: 180px;
  justify-content: center;
  align-items: start;
}

/* Featured sim card on home — bigger, more prominent */
.sim-card-featured {
  min-height: 320px;
  padding: 32px 36px 36px;
  border-color: var(--cyan);
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface-2) 100%);
}
.sim-card-featured h3 {
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.1;
  max-width: 18ch;
}
.sim-card-featured p {
  font-size: 15.5px;
  max-width: 54ch;
  color: var(--text-soft);
}
.sim-card-featured .card-actions .button-primary {
  padding: 16px 28px;
  font-size: 14px;
}

/* Page intro — used on library, follow, about, legal pages */
.page-intro {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: var(--space-16) var(--space-12) var(--space-12);
  margin-top: var(--space-8);
  position: relative;
  overflow: hidden;
}
.page-intro::before {
  content: attr(data-fig);
  position: absolute;
  top: 20px;
  left: 28px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--magenta);
}
.page-intro::after {
  content: attr(data-version);
  position: absolute;
  bottom: 20px;
  right: 28px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--muted-text);
}
.page-intro h1 {
  font-size: clamp(32px, 4vw, 50px);
  max-width: 22ch;
  margin: 16px 0;
}
.page-intro .hero-text {
  max-width: 60ch;
  font-size: 16px;
}

/* Legal / long-form text pages */
.legal-content {
  display: grid;
  gap: var(--space-6);
  max-width: 76ch;
  margin-top: var(--space-12);
}
.legal-block {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 2px solid var(--magenta);
  border-radius: var(--radius-sm);
  padding: var(--space-6) var(--space-8);
  display: grid;
  gap: 10px;
}
.legal-block h3 {
  font-family: 'Hanken Grotesk', sans-serif;
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
}
.legal-block p {
  font-size: 14.5px;
  color: var(--text-soft);
  line-height: 1.65;
}
.legal-block address {
  font-style: normal;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--text);
  line-height: 1.7;
  letter-spacing: 0.04em;
}
.legal-block a {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-color: rgba(48, 232, 255, 0.4);
  text-underline-offset: 3px;
}
.legal-block a:hover { text-decoration-color: var(--cyan); }

/* Story blocks (about page) */
.story-grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-12);
}
.story-block {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-12);
  padding: var(--space-8) 0;
  border-top: 1px solid var(--line);
}
.story-block:first-child { border-top: none; }
.story-block-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--magenta);
  padding-top: 6px;
}
.story-block-body h3 {
  font-family: 'Orbitron', sans-serif;
  font-weight: 500;
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: 0.005em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 14px;
}
.story-block-body p {
  font-size: 15.5px;
  color: var(--text-soft);
  line-height: 1.7;
  max-width: 62ch;
}
.story-block-body p + p { margin-top: 12px; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

/* ============================================================================
   INFO CARDS (about / model / etc.)
   ============================================================================ */

.stack-cards {
  display: grid;
  gap: 12px;
}
.info-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 2px solid var(--magenta);
  border-radius: var(--radius-sm);
  padding: 22px 24px 22px 26px;
  display: grid;
  gap: 8px;
  transition: border-left-color 0.25s ease, transform 0.25s ease;
}
.info-card:hover {
  border-left-color: var(--cyan);
  transform: translateX(2px);
}
.info-card strong {
  font-family: 'Hanken Grotesk', sans-serif;
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
}
.info-card span {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.55;
}

/* ============================================================================
   CTA BANNER
   ============================================================================ */

.cta-banner {
  background: var(--surface-2);
  border: 1px solid var(--cyan);
  border-radius: var(--radius-sm);
  padding: var(--space-12);
  display: grid;
  grid-template-columns: 1.6fr auto;
  align-items: center;
  gap: var(--space-8);
  margin-top: var(--space-24);
  position: relative;
}
.cta-banner .eyebrow { margin-bottom: 8px; color: var(--magenta); }
.cta-banner h2 {
  font-size: clamp(20px, 2.4vw, 28px);
  max-width: 28ch;
  margin: 0;
}

/* ============================================================================
   NEWSLETTER CAPTURE
   ============================================================================ */

.newsletter {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: var(--space-16) var(--space-12) var(--space-12);
  margin-top: var(--space-12);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-12);
  align-items: center;
  position: relative;
}
.newsletter::before {
  content: "RUN 04 · newsletter";
  position: absolute;
  top: 20px;
  left: 28px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--magenta);
}
.newsletter-copy { display: grid; gap: 10px; }
.newsletter-copy h2 { font-size: clamp(20px, 2vw, 26px); }
.newsletter-copy p { font-size: 14px; color: var(--text-soft); }
.newsletter-form {
  display: flex;
  gap: 12px;
  align-items: stretch;
  flex-wrap: wrap;
}
.newsletter-form input[type="email"] {
  flex: 1;
  min-width: 200px;
  padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  letter-spacing: 0.04em;
  transition: border-color 0.2s ease;
}
.newsletter-form input[type="email"]:focus {
  outline: none;
  border-color: var(--cyan);
}
.newsletter-form input[type="email"]::placeholder {
  color: var(--muted-text);
}
.newsletter-note {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--muted-text);
  margin-top: 10px;
}

/* ============================================================================
   SIM PAGE LAYOUT
   ============================================================================ */

.sim-page main { padding-top: 48px; }

.sim-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-8);
  align-items: start;
}

.sim-stage-wrap {
  display: grid;
  gap: var(--space-8);
}

.sim-intro {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: var(--space-12);
  position: relative;
}
.sim-intro::before {
  content: attr(data-fig);
  position: absolute;
  top: 18px;
  left: 24px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--magenta);
}
.sim-intro .eyebrow { margin-top: 14px; }
.sim-intro h1 {
  font-size: clamp(34px, 4.4vw, 52px);
  margin-top: 14px;
  margin-bottom: 14px;
  max-width: 18ch;
}
.sim-intro .hero-text { margin-top: 8px; }

.canvas-shell {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  display: grid;
  gap: 14px;
}
.canvas-shell canvas {
  width: 100%;
  height: auto;
  aspect-ratio: 960 / 576;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
}

.canvas-legend {
  display: flex;
  gap: 18px 22px;
  flex-wrap: wrap;
  padding: 8px 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-soft);
}
.canvas-legend span { display: inline-flex; align-items: center; gap: 8px; }
.legend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--muted);
}
.legend-food { background: #91D2A0; }
.legend-home { background: #EBC382; }
.legend-ant { background: var(--cyan); }
.legend-tree { background: var(--cyan); }
.legend-fire { background: var(--magenta); }
.legend-empty { background: var(--muted); }
.legend-ash { background: var(--text-soft); }

.explain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.panel-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 22px 24px;
  display: grid;
  gap: 14px;
}
.accent-card { border-color: var(--cyan); }

.panel-head { display: grid; gap: 6px; }
.panel-head h2 { font-size: 18px; line-height: 1.2; }
.panel-note {
  font-size: 13.5px;
  color: var(--text-soft);
  line-height: 1.55;
}

.source-notes { background: var(--surface); }
.source-list { display: grid; gap: 8px; padding-left: 0; }
.source-list li {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.55;
  padding-left: 18px;
  position: relative;
}
.source-list li::before {
  content: "·";
  position: absolute;
  left: 6px;
  color: var(--cyan);
  font-weight: 700;
}
.link-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ============================================================================
   CONTROL PANEL (sim pages)
   ============================================================================ */

.control-panel {
  display: grid;
  gap: var(--space-4);
  position: sticky;
  top: 90px;
  align-self: start;
}

.control-grid {
  display: grid;
  gap: 12px;
}

.control {
  display: grid;
  gap: 6px;
  font-size: 12px;
  color: var(--text-soft);
}
.control > span {
  display: flex;
  justify-content: space-between;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-text);
}
.control > span strong {
  font-family: 'JetBrains Mono', monospace;
  color: var(--cyan);
  font-weight: 500;
  font-size: 11px;
}
.control input[type="range"] {
  width: 100%;
  height: 22px;
  background: transparent;
  -webkit-appearance: none;
  appearance: none;
}
.control input[type="range"]::-webkit-slider-runnable-track {
  height: 2px;
  background: var(--line-strong);
  border-radius: 1px;
}
.control input[type="range"]::-moz-range-track {
  height: 2px;
  background: var(--line-strong);
  border-radius: 1px;
}
.control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  background: var(--cyan);
  border-radius: 50%;
  margin-top: -5px;
  cursor: pointer;
  box-shadow: 0 0 0 2px var(--bg), 0 0 12px rgba(48, 232, 255, 0.5);
}
.control input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  background: var(--cyan);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 12px rgba(48, 232, 255, 0.5);
}

.preset-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.preset-button {
  flex: 1;
  min-width: 0;
  padding: 10px 12px;
  font-size: 11px;
  letter-spacing: 0.12em;
  background: transparent;
  color: var(--text-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
  overflow: hidden;
}
.preset-button::before { content: none; }
.preset-button:hover { color: var(--magenta); border-color: var(--magenta); }
.preset-button.active {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(48, 232, 255, 0.08);
}

.action-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.action-row .button { flex: 1; justify-content: center; min-width: 0; }
.action-row .button-primary { padding: 12px 20px; font-size: 12px; }
.action-row .button-secondary { padding: 11px 19px; font-size: 12px; }

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-soft);
  cursor: pointer;
}
.checkbox-row input[type="checkbox"] {
  width: 14px;
  height: 14px;
  accent-color: var(--cyan);
  cursor: pointer;
}

.metric-stack { display: grid; gap: 8px; }
.metric-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted-text);
  text-transform: uppercase;
}
.metric-row:last-child { border-bottom: none; }
.metric-row strong {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.mini-bars-wrap {
  padding: 10px 0 4px;
  overflow: hidden;
}
.mini-bars {
  display: flex;
  gap: 2px;
  align-items: flex-end;
  height: 80px;
  padding: 0 2px;
}
.mini-bars > * {
  flex: 1;
  min-width: 3px;
  background: linear-gradient(to top, var(--cyan), var(--magenta));
  border-radius: 1px 1px 0 0;
  transition: height 0.2s ease;
}

/* ============================================================================
   RECORD MODE (toggled by the per-sim JS — see e.g. ant-colony.js)
   ============================================================================ */

body.record-mode .topbar,
body.record-mode .control-panel,
body.record-mode .sim-intro,
body.record-mode .explain-grid,
body.record-mode .panel-card.source-notes,
body.record-mode .fire-history-panel,
body.record-mode .site-footer {
  display: none !important;
}
body.record-mode .site-shell { padding: 0; max-width: 100vw; }
body.record-mode main { padding: 0; }
body.record-mode .sim-layout { grid-template-columns: 1fr; gap: 0; }
body.record-mode .sim-stage-wrap { gap: 0; }
body.record-mode .canvas-shell {
  border: none;
  border-radius: 0;
  padding: 0;
}
body.record-mode .canvas-legend { display: none; }

/* ============================================================================
   FOOTER
   Pattern: 4-col grid (Brand · Explore · Legal · Newsletter) + hairline
   divider + bottom row (socials left, copyright right). Reference saved at
   _references/footer/signex-footer-2026-04-19.png, adapted to Quantum Plasma.
   Structure:
     .footer-main    — max-1280 grid, padded
     .footer-divider — full-width 1px rule
     .footer-bottom  — socials + copyright row
   <footer> sits outside .site-shell so its background spans the viewport.
   ============================================================================ */

.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--line);
  margin-top: var(--space-24);
  position: relative;
  overflow: hidden;
}

.footer-main {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-24) var(--space-12) var(--space-16);
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: var(--space-12);
  align-items: start;
  position: relative;
}

/* Subtle L-corner line — magenta accent, echoes the SIGNEX reference */
.footer-corner-deco {
  position: absolute;
  left: var(--space-6);
  bottom: 0;
  width: 180px;
  height: 180px;
  color: var(--magenta);
  opacity: 0.42;
  pointer-events: none;
  z-index: 0;
}

.footer-main > :not(.footer-corner-deco) { position: relative; z-index: 1; }

.footer-brand-col { display: grid; gap: var(--space-4); }
.footer-brand-col .brand {
  font-size: 32px;
  line-height: 1;
  letter-spacing: -0.005em;
}
.footer-lede {
  font-family: 'Hanken Grotesk', sans-serif;
  font-size: 15px;
  line-height: 1.55;
  color: var(--text-soft);
  margin-top: var(--space-3);
  max-width: 34ch;
}

.footer-col { display: grid; gap: 0; }
.footer-heading {
  font-family: 'Hanken Grotesk', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text);
  margin: 0 0 var(--space-4);
}
.footer-col ul { display: grid; gap: var(--space-3); margin: 0; padding: 0; }
.footer-col li { list-style: none; }
.footer-col a {
  font-family: 'Hanken Grotesk', sans-serif;
  font-size: 16px;
  color: var(--text-soft);
  transition: color 0.18s ease;
  line-height: 1.35;
}
.footer-col a:hover,
.footer-col a:focus-visible { color: var(--magenta); outline: none; }

/* Newsletter column */
.footer-newsletter-col { gap: var(--space-4); }
.footer-newsletter-copy {
  font-family: 'Hanken Grotesk', sans-serif;
  font-size: 15px;
  line-height: 1.55;
  color: var(--text-soft);
  max-width: 32ch;
}
.footer-subscribe {
  display: flex;
  align-items: stretch;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.18s ease;
}
.footer-subscribe:focus-within { border-color: rgba(48, 232, 255, 0.45); }
.footer-subscribe input {
  flex: 1;
  padding: 12px 14px;
  font: inherit;
  font-size: 14px;
  background: transparent;
  border: none;
  color: var(--text);
  outline: none;
  min-width: 0;
}
.footer-subscribe input::placeholder { color: var(--muted-text); }
.footer-subscribe button {
  background: var(--magenta);
  color: #0C0A14;
  font-weight: 700;
  font-size: 20px;
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.18s ease;
  border: none;
}
.footer-subscribe button:hover { background: #ff5cab; }
.footer-subscribe button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.footer-contact-link {
  font-family: 'Hanken Grotesk', sans-serif;
  font-size: 15px;
  color: var(--cyan);
  border-bottom: 1px dashed transparent;
  transition: border-color 0.2s ease;
  align-self: start;
  padding-bottom: 1px;
}
.footer-contact-link:hover { border-bottom-color: var(--cyan); }

.footer-locale {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted-text);
}

/* Hairline divider */
.footer-divider {
  max-width: 1280px;
  margin: 0 auto;
  height: 1px;
  background: var(--line);
}

/* Bottom bar — socials left, copyright right */
.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-12) var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer-socials {
  display: inline-flex;
  gap: var(--space-4);
  align-items: center;
}
.footer-socials a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: var(--text-soft);
  transition: color 0.18s ease, transform 0.18s ease;
}
.footer-socials a:hover { color: var(--magenta); transform: translateY(-1px); }
.footer-socials svg { width: 22px; height: 22px; }

.footer-copy {
  font-family: 'Hanken Grotesk', sans-serif;
  font-size: 13px;
  color: var(--muted-text);
  letter-spacing: 0.04em;
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */

@media (max-width: 1024px) {
  .hero-card { grid-template-columns: 1fr; }
  .hero-sim-frame { max-width: 520px; }
  .sim-layout { grid-template-columns: 1fr; }
  .control-panel { position: static; }
  .section-split { grid-template-columns: 1fr; }
  .newsletter { grid-template-columns: 1fr; gap: var(--space-8); }
  .explain-grid { grid-template-columns: 1fr; }
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8) var(--space-12);
    padding: var(--space-16) var(--space-8) var(--space-12);
  }
  .footer-brand-col { grid-column: 1 / -1; }
  .footer-newsletter-col { grid-column: 1 / -1; }
  .footer-corner-deco { width: 140px; height: 140px; left: var(--space-4); }
  .story-block { grid-template-columns: 1fr; gap: var(--space-4); }
}

@media (max-width: 700px) {
  .site-shell { padding: 0 var(--space-4); }
  .topbar { margin: 0 calc(-1 * var(--space-4)); padding: 12px var(--space-4); }
  .hero-card { padding: 60px var(--space-6) var(--space-8); }
  .hero-card::before, .hero-card::after { font-size: 10px; }
  .hero-sim-frame { max-width: 100%; }
  .cta-banner { grid-template-columns: 1fr; }
  .footer-main {
    grid-template-columns: 1fr;
    padding: var(--space-12) var(--space-6) var(--space-8);
    gap: var(--space-8);
  }
  .footer-brand-col { grid-column: 1; }
  .footer-brand-col .brand { font-size: 28px; }
  .footer-corner-deco { width: 100px; height: 100px; left: var(--space-2); opacity: 0.3; }
  .footer-subscribe { max-width: none; }
  .footer-bottom {
    padding: var(--space-4) var(--space-6) var(--space-6);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }
  .sim-intro, .panel-card { padding: 56px var(--space-6) var(--space-6); }
  .action-row { flex-direction: column; }
  .action-row .button { width: 100%; }
}